A first abutting surface, a first welding surface, a first facing surface are formed in a differential case. A second abutting surface, a second welding surface, and a second facing surface are formed in a differential ring gear. In an installing step, the first abutting surface and the second abutting surface are inserted, positions of the differential case and the differential ring gear are determined in an axial direction, a separation portion that spaces the first welding surface and the second welding surface away from each other and that has a non-linear portion is formed, and a void is formed between the first facing surface and the second facing surface. In a welding step, a laser is irradiated to the separation portion and the first welding surface and the second welding surface are welded.

An arc brazing method of bonding different materials includes disposing an aluminum alloy to be bonded on a steel base material and arc brazing a welded portion between the steel base material and the aluminum alloy using a wire. The wire is an alloy containing Zn. It is possible to compensate for brittleness due to the bonding of different materials and to improve wettability.

The axle welder can be easily configured and adjusted to accommodate axle assemblies of varying axle shaft lengths, hub styles (“straight” and “drop axle”) and lug bolt configurations. The axle welder uses a sliding carriage that slides along the support frame at one end of the welder to accommodate differing shaft lengths. The axle welder also includes a pair of pivoting hub lifts that accommodate both straight and drop axle style axle hubs using modular mounting plates. Modular mounting plates (“hub adaptors”) fitted to the hub lifts accommodate hub assemblies with differing lug bolt patterns. The axle welder is built on a rectangular frame that supports a pair of weld units and articulated electrode arms. The axle welder also includes a pair axle supports for carrying the axle shafts within the support frame. A shaft drive pivotally mounted to the support frame lowers to engage and rotate the axle shaft and hub assemblies in unison during the welding process.

Automated real-time characterization of resistance spot welds using ultrasound-based nondestructive evaluation requires a computational process and system to accurately and rapidly interpret the ultrasonic data in real time. Such a process can be automatically learned using artificial intelligence, from a dataset of exemplary ultrasonic data from nondestructive evaluation of resistance spot welds for which a corresponding ideal evaluation of each weld is provided. The process can then be implemented into a system to automatically interpret data from non-destructive evaluation in real-time. The ideal evaluation of each weld requires identification a large set of features that are observable in the ultrasonic signature and comprehensively characterize the corresponding weld process.

A laminate structure and method of forming is provided. The laminate structure includes a first metal sheet having a first thickness, a second metal sheet having a second thickness, and an adhesive core having an adhesive thickness. The adhesive core is disposed between and bonded to the first and second metal sheets. The first and second metal sheets are made of an aluminum based material and the adhesive core is made of an adhesive material also described as a viscoelastic adhesive material. The laminate structure is configured such that a ratio of the sum of the first and second thickness to the adhesive thickness is greater than either to one (8:1). The laminate structure including the viscoelastic adhesive core is characterized by a composite loss factor at 1,000 Hertz which is continuously greater than 0.1 within a temperature range of 25 degrees Celsius to 50 degrees Celsius.

An electromagnetic pulse additive device for a connection ring of a heavy-lift carrier rocket is provided. The device includes brackets, a gear disk rotatably matched with the annular ground rail through a plurality of rolls arranged in a circumferential direction of the gear disk, a first drive motor, an annular ground rail, and a guide rail in a semicircular shape arranged at top ends of the brackets. An output shaft of a first drive motor is fixedly provided with a first drive gear engaged with the gear disk. The guide rail is slidably provided with three lifting modules which respectively drive a bending module, an electromagnetic head arranged electromagnetic coil electrically connected with a capacitor and a discharge circuit, and a rotational friction and extrusion module including a second drive motor and a friction bar fixedly connected to an output shaft of the second drive motor to rise and fall.

A component arrangement and a method for producing the component arrangement are provided. The component arrangement includes a first component and a second component, which are arranged in an overlapping arrangement and are connected by a laser fillet weld and at two fixing points arranged laterally offset from the laser fillet weld, one of the components is provided with at least one projection, which projects in the direction of the other component and which is arranged and formed such that, when the components are positioned correctly in relation to one another and are pressed together at the fixing points, a flange portion of the first component, set at an angle in the region of the laser fillet weld to be formed, is pressed onto the second component by way of the component edge. For sealing the component arrangement, the fixing points are arranged set back into the overlapping region with respect to the laser fillet weld, and at least between the fixing points there is formed a continuous bonding region, in which the first and second components are bonded to one another.

A laser welded assembly and method of making. The laser welded assembly includes a first work piece having a thickness (T1) defined between an external surface and a faying surface; a second work piece having a thickness (T2) defined between an external surface and a faying surface of the second work piece; a weld seam having a core fusion zone extending from the external surface of the first work piece through the faying interface and at least partially into the thickness (T2) of the second work piece; and a protruding fusion zone extending laterally from the core fusion zone adjacent to the external surface of the first work piece. The protruding fusion zone may be formed by post-heating or concurrently with the core fusion zone.

A process is provided for welding an assembly of a first tubular component and a second tubular component, the first and second tubular components having first and second cylindrical portions, respectively. The process uses a pressing jig, a pressing tool, a welding jig and a welding head. The process includes: positioning the first tubular component with respect to the pressing jig; clamping the first tubular component against the pressing jig; freely fitting the second cylindrical portion into the first cylindrical portion, the two cylindrical portions being substantially coaxial; placing the second component with respect to the first cylindrical portion and the pressing jig; tightening the second tubular component against the pressing jig; aligning the two fitted cylindrical portions with the pressing tool; and pressing by plastic deformation the first and second cylindrical portions. The first and second pressed tubular components form a rigid assembly, with the two fitted and pressed cylindrical portions defining a fitting and a joint. Additional steps include: positioning the rigid assembly with respect to the welding jig; clamping the rigid assembly against the welding jig; and welding by positioning and orienting the welding head repeatably with respect to the fitting and the joint, where the rigid assembly is positioned with respect to the welding jig along one or more surfaces belonging exclusively to the first component in the pressed state.

A method for joining two components of a meltable material comprises the steps of providing a first component having a first border region and a second component having a second border region, placing the second component relative to the first component so as to form an overlap between the first border region and the second border region under a gap between the first border region and the second border region, continuously heating opposed sections of the first border region and the second border region at the same time through at least one energy source arranged in the gap at least partially, continuously providing a relative motion of the at least one energy source along the first border region and the second border region in the gap, and continuously pressing already heated sections of the first border region and the second border region onto each other.